From: Ian Rogers <irogers@google.com>
Date: Tue, 13 Aug 2024 04:06:12 +0000 (-0700)
Subject: perf disasm: Fix memory leak for locked operations
X-Git-Tag: v6.12-rc1~109^2~178
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a05031713d460de5ff8500680458ed8f3fd946e6;p=thirdparty%2Fkernel%2Fstable.git

perf disasm: Fix memory leak for locked operations

lock__parse() calls disasm_line__parse() passing
&ops->locked.ins.name that will use strdup() to populate it.

Ensure ops->locked.ins.name is freed in lock__delete().

Found with address/leak sanitizer.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20240813040613.882075-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

diff --git a/tools/perf/util/disasm.c b/tools/perf/util/disasm.c
index 22289003e16d1..226d2181f6945 100644
--- a/tools/perf/util/disasm.c
+++ b/tools/perf/util/disasm.c
@@ -566,6 +566,7 @@ static void lock__delete(struct ins_operands *ops)
 		ins_ops__delete(ops->locked.ops);
 
 	zfree(&ops->locked.ops);
+	zfree(&ops->locked.ins.name);
 	zfree(&ops->target.raw);
 	zfree(&ops->target.name);
 }